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How do I default the null field to zero?

asnath
asnath asked
on
Medium Priority
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Last Modified: 2010-07-22
I have summary calculations involving different fields which are sometimes null values. How do I handle those null values and default them to zero in crystal reports.?

Isnull function does check for the null value but is there any built in function like NVL in crystal to do the same functionality as defaulting the field to zero.

Thanks in advance!

~nat
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Top Expert 2004
Commented:
Under the File menu, Report Options.
You have 2 options to Convert Nulls there, Database values and/or Other values.

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There are a few of place that you can do this.
1. Using a view, put a check in on number fields - isnull(column, 0) as columnname
2. In the area the bdreed35 stated
3. Right click on the column in the report, go to format field.  
   Click on Customize, and go to Show Zero Values as

Using any combination of these will ensure that no nulls are displayed.

Author

Commented:
If I want to convert the null values to zero value....how do i do there in the report options.?

Goto File > Report Option>
In there, it should read something like "Convert database NuLL values to default" and "Convert Other Null Values to Default"

If you want to apply this to all reports:
Goto File>Options> Reporting Tab>
In there, you should see under that Reading Data section, "Convert other NULL Values to Default"

Author

Commented:
But I am doing summary of many of these fields this change in the Report options will not work for the real calculations ...is that correct?

If I want to add column1+column2 +column3 + column4+ column5 ....................

In this calculation any one of the field maybe null anytime......so how do i handle this null problem in this summary calculation.
By setting the defaults and other options, it should take care of this issue.  If it does, adding the isnull function around every column will convert it all over for you.

isnull(column1,0)+isnull(column2,0) +isnull(column3,0) + isnull(column4,0)+ isnull(column5,0)

Author

Commented:
If I do isnull(column1,0)
It says
Too many functions have been given to this function.

What could be wrong with this?
local numbervar column1:= if isnull([column1name]) then 0 else [column1name];
local numbervar column2:= if isnull([column2name]) then 0 else [column2name];
ect.

column1+column2


Oops, sql server coding coming out.  You actually have to set the values to zero if null.

Author

Commented:
bdreed35 and wykabryan ....
Thank you very much for you help!

~nat
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